Hi-Fire Iridescent Colors Hi-Fire Iridescents with the Spectrum
super smooth surface and unsurpassed cutability. Spectrum achieved a
satin-like gleam that is as beautiful before firing as it is after. Fire
it Irid-side up, Irid-side down - or in between layers. Fire it over and
over again. Or, don't fire it at all! The Hi-Fire Irid is a softer look --
very appealing for stained glass work too! Spectrum thinks it's the
best Iridescent ever.